"Unfortunately, in many cases, non residents have more experience hunting elk than residents of western states"
Thats an unusual statement, no offense but I'd like to know where you got that stat from, or is it just opinion.
I've seen 300 win mags not put an elk down. I doubt they were wondering if it was enough.
Shot placement and arrow is everything.
My best bud is going with me this season with a 42# bow and 650 gr arrows and I KNOW if he gets a broadside shot @ 20yds and under his set up will be the elks last day. Not opinion, been there done that. It COMPLETLY depends on the man behind the bow, no question.